/*M///////////////////////////////////////////////////////////////////////////////////////
//
//  IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.
//
//  By downloading, copying, installing or using the software you agree to this license.
//  If you do not agree to this license, do not download, install,
//  copy or use the software.
//
//
//                        Intel License Agreement
//                For Open Source Computer Vision Library
//
// Copyright (C) 2000, Intel Corporation, all rights reserved.
// Third party copyrights are property of their respective owners.
//
// Redistribution and use in source and binary forms, with or without modification,
// are permitted provided that the following conditions are met:
//
//   * Redistribution's of source code must retain the above copyright notice,
//     this list of conditions and the following disclaimer.
//
//   * Redistribution's in binary form must reproduce the above copyright notice,
//     this list of conditions and the following disclaimer in the documentation
//     and/or other materials provided with the distribution.
//
//   * The name of Intel Corporation may not be used to endorse or promote products
//     derived from this software without specific prior written permission.
//
// This software is provided by the copyright holders and contributors "as is" and
// any express or implied warranties, including, but not limited to, the implied
// warranties of merchantability and fitness for a particular purpose are disclaimed.
// In no event shall the Intel Corporation or contributors be liable for any direct,
// indirect, incidental, special, exemplary, or consequential damages
// (including, but not limited to, procurement of substitute goods or services;
// loss of use, data, or profits; or business interruption) however caused
// and on any theory of liability, whether in contract, strict liability,
// or tort (including negligence or otherwise) arising in any way out of
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//M*/

#include "precomp.hpp"

#if _MSC_VER >= 1200
#pragma warning( disable: 4711 )
#endif

#if (defined WIN64 || defined _WIN64) && defined _MSC_VER && !defined __ICL
#pragma optimize("",off)
#endif

namespace cv {

template<> inline void Ptr<CvCapture>::delete_obj()
{ cvReleaseCapture(&obj); }

template<> inline void Ptr<CvVideoWriter>::delete_obj()
{ cvReleaseVideoWriter(&obj); }

}

/************************* Reading AVIs & Camera data **************************/

CV_IMPL void cvReleaseCapture(CvCapture** pcapture) {
    if (pcapture && *pcapture) {
        delete *pcapture;
        *pcapture = 0;
    }
}

CV_IMPL IplImage* cvQueryFrame(CvCapture* capture) {
    return capture ? capture->queryFrame() : 0;
}


CV_IMPL int cvGrabFrame(CvCapture* capture) {
    return capture ? capture->grabFrame() : 0;
}

CV_IMPL IplImage* cvRetrieveFrame(CvCapture* capture, int idx) {
    return capture ? capture->retrieveFrame(idx) : 0;
}

CV_IMPL double cvGetCaptureProperty(CvCapture* capture, int id) {
    return capture ? capture->getProperty(id) : 0;
}

CV_IMPL int cvSetCaptureProperty(CvCapture* capture, int id, double value) {
    return capture ? capture->setProperty(id, value) : 0;
}

CV_IMPL int cvGetCaptureDomain(CvCapture* capture) {
    return capture ? capture->getCaptureDomain() : 0;
}


/**
 * Camera dispatching method: index is the camera number.
 * If given an index from 0 to 99, it tries to find the first
 * API that can access a given camera index.
 * Add multiples of 100 to select an API.
 */
CV_IMPL CvCapture* cvCreateCameraCapture(int index) {
    int  domains[] = {
#ifdef HAVE_VIDEOINPUT
        CV_CAP_DSHOW,
#endif
        CV_CAP_IEEE1394,   // identical to CV_CAP_DC1394
        CV_CAP_STEREO,
        CV_CAP_PVAPI,
        CV_CAP_VFW,        // identical to CV_CAP_V4L
        CV_CAP_MIL,
        CV_CAP_QT,
        CV_CAP_UNICAP,
        -1
    };

    // interpret preferred interface (0 = autodetect)
    int pref = (index / 100) * 100;
    if (pref) {
        domains[0] = pref;
        index %= 100;
        domains[1] = -1;
    }

    // try every possibly installed camera API
    for (int i = 0; domains[i] >= 0; i++) {
#if defined(HAVE_VIDEOINPUT) || defined(HAVE_TYZX) || defined(HAVE_VFW) || \
        defined(HAVE_CAMV4L) || defined (HAVE_CAMV4L2) || defined(HAVE_GSTREAMER) || \
        defined(HAVE_DC1394_2) || defined(HAVE_DC1394) || defined(HAVE_CMU1394) || \
        defined(HAVE_GSTREAMER) || defined(HAVE_MIL) || defined(HAVE_QUICKTIME) || \
        defined(HAVE_UNICAP) || defined(HAVE_PVAPI)
        // local variable to memorize the captured device
        CvCapture* capture;
#endif

        switch (domains[i]) {
#ifdef HAVE_VIDEOINPUT
        case CV_CAP_DSHOW:
            capture = cvCreateCameraCapture_DShow(index);
            if (capture) {
                return capture;
            }
            break;
#endif

#ifdef HAVE_TYZX
        case CV_CAP_STEREO:
            capture = cvCreateCameraCapture_TYZX(index);
            if (capture) {
                return capture;
            }
            break;
#endif

        case CV_CAP_VFW:
#ifdef HAVE_VFW
            capture = cvCreateCameraCapture_VFW(index);
            if (capture) {
                return capture;
            }
#endif
#if defined (HAVE_CAMV4L) || defined (HAVE_CAMV4L2)
            capture = cvCreateCameraCapture_V4L(index);
            if (capture) {
                return capture;
            }
#endif
#ifdef HAVE_GSTREAMER
            capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L2, 0);
            if (capture) {
                return capture;
            }
            capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_V4L, 0);
            if (capture) {
                return capture;
            }
#endif
            break;

        case CV_CAP_FIREWIRE:
#ifdef HAVE_DC1394_2
            capture = cvCreateCameraCapture_DC1394_2(index);
            if (capture) {
                return capture;
            }
#endif
#ifdef HAVE_DC1394
            capture = cvCreateCameraCapture_DC1394(index);
            if (capture) {
                return capture;
            }
#endif
#ifdef HAVE_CMU1394
            capture = cvCreateCameraCapture_CMU(index);
            if (capture) {
                return capture;
            }
#endif
            /* Re-enable again when gstreamer 1394 support will land in the backend code
                #ifdef HAVE_GSTREAMER
                    capture = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_1394, 0);
                    if (capture)
                        return capture;
                #endif
            */
            break;
#ifdef HAVE_MIL
        case CV_CAP_MIL:
            capture = cvCreateCameraCapture_MIL(index);
            if (capture) {
                return capture;
            }
            break;
#endif

#ifdef HAVE_QUICKTIME
        case CV_CAP_QT:
            capture = cvCreateCameraCapture_QT(index);
            if (capture) {
                return capture;
            }
            break;
#endif

#ifdef HAVE_UNICAP
        case CV_CAP_UNICAP:
            capture = cvCreateCameraCapture_Unicap(index);
            if (capture) {
                return capture;
            }
            break;
#endif

#ifdef HAVE_PVAPI
        case CV_CAP_PVAPI:
            capture = cvCreateCameraCapture_PvAPI(index);
            if (capture) {
                return capture;
            }
            break;
#endif

        }
    }

    // failed open a camera
    return 0;
}

/**
 * Videoreader dispatching method: it tries to find the first
 * API that can access a given filename.
 */
CV_IMPL CvCapture* cvCreateFileCapture(const char* filename) {
    CvCapture* result = 0;

#ifdef WIN32
    if (! result) {
        result = cvCreateFileCapture_Win32(filename);
    }
#endif

#ifdef HAVE_FFMPEG
    if (! result) {
        result = cvCreateFileCapture_FFMPEG(filename);
    }
#endif

#ifdef HAVE_XINE
    if (! result) {
        result = cvCreateFileCapture_XINE(filename);
    }
#endif

#ifdef HAVE_GSTREAMER
    if (! result) {
        result = cvCreateCapture_GStreamer(CV_CAP_GSTREAMER_FILE, filename);
    }
#endif

#ifdef HAVE_QUICKTIME
    if (! result) {
        result = cvCreateFileCapture_QT(filename);
    }
#endif

    if (! result) {
        result = cvCreateFileCapture_Images(filename);
    }

    return result;
}

/**
 * Videowriter dispatching method: it tries to find the first
 * API that can write a given stream.
 */
CV_IMPL CvVideoWriter* cvCreateVideoWriter(const char* filename, int fourcc,
        double fps, CvSize frameSize, int is_color) {
    //CV_FUNCNAME( "cvCreateVideoWriter" );

    CvVideoWriter* result = 0;

    if (!fourcc || !fps) {
        result = cvCreateVideoWriter_Images(filename);
    }

#ifdef WIN32
    if (!result) {
        result = cvCreateVideoWriter_Win32(filename, fourcc, fps, frameSize, is_color);
    }
#endif

    /*	#ifdef HAVE_XINE
    	if(!result)
    		result = cvCreateVideoWriter_XINE(filename, fourcc, fps, frameSize, is_color);
    	#endif
    */
#ifdef HAVE_FFMPEG
    if (!result) {
        result = cvCreateVideoWriter_FFMPEG(filename, fourcc, fps, frameSize, is_color);
    }
#endif

#ifdef HAVE_QUICKTIME
    if (!result) {
        result = cvCreateVideoWriter_QT(filename, fourcc, fps, frameSize, is_color);
    }
#endif
#ifdef HAVE_GSTREAMER
    if (! result) {
        result = cvCreateVideoWriter_GStreamer(filename, fourcc, fps, frameSize, is_color);
    }
#endif
    if (!result) {
        result = cvCreateVideoWriter_Images(filename);
    }

    return result;
}

CV_IMPL int cvWriteFrame(CvVideoWriter* writer, const IplImage* image) {

    return writer ? writer->writeFrame(image) : 0;
}

CV_IMPL void cvReleaseVideoWriter(CvVideoWriter** pwriter) {
    if (pwriter && *pwriter) {
        delete *pwriter;
        *pwriter = 0;
    }
}

namespace cv {

VideoCapture::VideoCapture()
{}

VideoCapture::VideoCapture(const string& filename) {
    open(filename);
}

VideoCapture::VideoCapture(int device) {
    open(device);
}

VideoCapture::~VideoCapture() {
    cap.release();
}

bool VideoCapture::open(const string& filename) {
    cap = cvCreateFileCapture(filename.c_str());
    return isOpened();
}

bool VideoCapture::open(int device) {
    cap = cvCreateCameraCapture(device);
    return isOpened();
}

bool VideoCapture::isOpened() const { return !cap.empty(); }

void VideoCapture::release() {
    cap.release();
}

bool VideoCapture::grab() {
    return cvGrabFrame(cap) != 0;
}

bool VideoCapture::retrieve(Mat& image, int channel) {
    IplImage* _img = cvRetrieveFrame(cap, channel);
    if (!_img) {
        image.release();
        return false;
    }
    if (_img->origin == IPL_ORIGIN_TL) {
        image = Mat(_img);
    } else {
        Mat temp(_img);
        flip(temp, image, 0);
    }
    return true;
}

VideoCapture& VideoCapture::operator >> (Mat& image) {
    if (!grab()) {
        image.release();
    } else {
        retrieve(image);
    }
    return *this;
}

bool VideoCapture::set(int propId, double value) {
    return cvSetCaptureProperty(cap, propId, value) != 0;
}

double VideoCapture::get(int propId) {
    return cvGetCaptureProperty(cap, propId);
}

VideoWriter::VideoWriter()
{}

VideoWriter::VideoWriter(const string& filename, int fourcc, double fps, Size frameSize, bool isColor) {
    open(filename, fourcc, fps, frameSize, isColor);
}

VideoWriter::~VideoWriter() {
    writer.release();
}

bool VideoWriter::open(const string& filename, int fourcc, double fps, Size frameSize, bool isColor) {
    writer = cvCreateVideoWriter(filename.c_str(), fourcc, fps, frameSize, isColor);
    return isOpened();
}

bool VideoWriter::isOpened() const {
    return !writer.empty();
}

VideoWriter& VideoWriter::operator << (const Mat& image) {
    IplImage _img = image;
    cvWriteFrame(writer, &_img);
    return *this;
}

}
